com.google.bitcoin.core
Class GetBlocksMessage

java.lang.Object
  com.google.bitcoin.core.Message
      com.google.bitcoin.core.GetBlocksMessage

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

GetHeadersMessage

public class GetBlocksMessage
extends Message

Represents the "getblocks" P2P network message, which requests the hashes of the parts of the block chain we're missing. Those blocks can then be downloaded with a GetDataMessage.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.google.bitcoin.core.Message

Message.LazyParseException

Field Summary

protected List<Sha256Hash>	locator
protected Sha256Hash	stopHash
protected long	version

Fields inherited from class com.google.bitcoin.core.Message

bytes, checksum, cursor, length, MAX_SIZE, offset, params, parsed, parseLazy, parseRetain, protocolVersion, recached, UNKNOWN_LENGTH

Constructor Summary

GetBlocksMessage(NetworkParameters params, byte[] msg)

GetBlocksMessage(NetworkParameters params, List<Sha256Hash> locator, Sha256Hash stopHash)

Method Summary

protected void	bitcoinSerializeToStream(OutputStream stream) Serializes this message to the provided stream.
boolean	equals(Object o)
List<Sha256Hash>	getLocator()
Sha256Hash	getStopHash()
int	hashCode()
void	parse()
protected void	parseLite() Perform the most minimal parse possible to calculate the length of the message.
String	toString()

Methods inherited from class com.google.bitcoin.core.Message

adjustLength, bitcoinSerialize, bitcoinSerialize, ensureParsed, getHash, getMessageSize, getParams, isCached, isParsed, isRecached, maybeParse, unCache, unsafeBitcoinSerialize

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

version

protected long version

locator

protected List<Sha256Hash> locator

stopHash

protected Sha256Hash stopHash

Constructor Detail

GetBlocksMessage

public GetBlocksMessage(NetworkParameters params,
                        List<Sha256Hash> locator,
                        Sha256Hash stopHash)

GetBlocksMessage

public GetBlocksMessage(NetworkParameters params,
                        byte[] msg)
                 throws ProtocolException

Throws:

ProtocolException

Method Detail

parseLite

protected void parseLite()
                  throws ProtocolException

Description copied from class: Message

Perform the most minimal parse possible to calculate the length of the message. This is only required for subclasses of ChildClass as root level messages will have their length passed into the constructor.

Implementations should adhere to the following contract: If parseLazy = true the 'length' field must be set before returning. If parseLazy = false the length field must be set either within the parseLite() method OR the parse() method. The overriding requirement is that length must be set to non UNKNOWN_MESSAGE value by the time the constructor exits.

Specified by:

parseLite in class Message

Throws:

ProtocolException

parse

public void parse()
           throws ProtocolException

Throws:

ProtocolException

getLocator

public List<Sha256Hash> getLocator()

getStopHash

public Sha256Hash getStopHash()

toString

public String toString()

Overrides:

toString in class Object

bitcoinSerializeToStream

protected void bitcoinSerializeToStream(OutputStream stream)
                                 throws IOException

Description copied from class: Message

Serializes this message to the provided stream. If you just want the raw bytes use bitcoinSerialize().

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object